In a universe divided into three heavenly realms, Yang Chen, a human spiritual cultivator, awakened rare dual spiritual roots and was involved in a thousand-year dispute between the spiritual habitat world, the wilderness world of wild beasts, and the evil energy disaster realm. He unexpectedly inherited the legacy of his mother, "Star Sword Master" Su Han, and became the master of the Nine-Yam Divine Weapon "Shaking Light Sword", only to discover that he was actually the "Son of Chaos" from the Fallen Angels and the Void Spirits.
In order to prevent the fallen gods from devouring the heavens, Yang Chen formed the "Guardians of the Heavens" with the Elf Saint Lin Yue, the Dragonborn Prince Ao Lie, and the Shadow Clan's mysterious assassin Su Jiuli. They were involved in spiritual wars, evil black tides, and beast tide riots. When he uncovered the secret of the Void Spirit Palace and put on the Double King Crown, he discovered that the so-called "Chaos Twins" were actually part of the Ruins God's conspiracy - the real threat was hidden deep in the roots of the twin trees in the symbiosis world, hidden in the "Holy Spear of Order" left behind by his mother Su Han.
The game between order and chaos, the choice between race and bloodline, when the twin trees of the fourth heaven "Symbiosis World" bloom, Yang Chen must use himself as a bridge to find a third way between destruction and rebirth...
